.mainLogo {
  float: left;
  width: 150px;
}
.mainLogo span {
  background: rgba(255, 255, 255, 0.3);
  padding: 10px;
  color: white;
}

.mainMenu {
  float: left;
}

.mainAuth {
  float: right;
  width: 150px;
}

.mainAuth span {
  margin-left: 5px;
  color: white;
}

.mainContent{
  min-height: 480px;
  background: #fff;
}
